Mining-drill device



L. F. VERDY.

WINING DRILL DEVICE,

APPLICATION HLED MAY24. 1920,

Patented June 2%, 1921..

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L. F. VERDY. MINING DRILL DEVICE. APPLICATION man MAY24,1920.

L. F. VERDY.

MINING DRILL DEVICE. I APPLICATION FILED MAYZ4, I920- v I Patent-Mame28, 1921.

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LOUIS FRANCOIS VEBDY, OF PLEASANTVILLE, INDIANA.

MINING-DRILL DEVICE.

Specification of Letters Patent.

Patented June 28, 1921.

Application filed May 24, 1920. Serial No. 883,716.

[0 all whom it may concern:

Be it known that I, LOUIS FRANCOIS Visitor, subject of France, andresident of Pleasantville, in the county of Sullivan and State ofIndiana, have invented certain new and useful Improvements inMiningDrill Devices, of which the following is a specification.

This invention relates to improvements in power driven drilling machinesadaptable for mining purposes.

Its primary object is to provide in a power driven drilling machine ofthis kind a drill rod having a feeding arrangement whereby said drillrod may be fed from the rear of its driving mechanism.

Another object is to provide in a power driven drilling machine, a drillrod having a pusher attached thereto and which may be operated from itsrear byhand or from the side of said drilling machine by means of acrank handle.

A further object is to provide in connection with a drill rod having apusher attached at its rear, balancing means for facilitating its truecentral forward motion.

A still further object is to provide in a power driven drilling machinea power transmission mechanism from the power source to the drill rodwhich is equipped with means adapted to facilitate the drill rod beingdriven, or to make it inoperative when so desired.

The importance of the power driven drill for minin blasting, boring,etc, cannot be overestimated, it being the most essential apparatus forsuchwork. Therefore, it is imperative that the imperfections in such adrill should be minimized and its working utility increased as much aspossible.

In the past a great disadvantage in the use of such a drill has been itsinability to drill deep holes without shifting with it, its drivingmechanism. This inability was due to the fact that the drill rod wasoperated and fed from the front of its driving mechanism. Otherdisadvantages were the restricted operating possibilities of such deviceand the comparatively small space in front of the machine within whichthe operator had to do his work of correctly feeding and otherwisemanipulating the drill and regulating its driving mechanism.

In my improved power driven drilling machine these and otherdisadvantages have been overcome. I have provide means whereby the drillrod may be fed and guided either by hand from the rear and through thecasing of its driving mechanism or pushed forward by a specialarrangement operable from the side of the driving 1necl1- anism, whilesimultaneously maintaining the drill in perfectly balanced centralposition during its forward motion. 1 have also provided means wherebythe drill rod may be made inoperative when so desired, although itsdriving mechanism may be kept working.

In order that the objects specified above and other objects in view maybe clearly understood the following description is given, referencebeing made to the accompanying drawings forming part of thisspecification in which Figure 1 is a perspective view of my device.

Fig. 2 is a top view of same.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 2 with emery wheeldetached and pusher attached.

Fig. 4 is a sectional view taken on line 4l4: of Fig. 3, showingcoupling and feeding arrangements.

Fig. 5 is a longitudinal cross-sectional view of the drill rod pusher.

Fig. 6 is a front view of same.

In the drawings a frame shown composed of a plurality of uprights 1attached to a base-plate 2 and adapted to receive at their upper endsadjustable spindles 3 supporting a log or upper plate 4:. The latterengages the upper structure or ceiling of the mine pit. The entire frameserves as a support for the housing of the drill mechanism. When thedrill is used for open drilling a heavy plate 5 is connected with baseplate 2 and prevents through its weight the drill mechanism from leavingits working position.

At about the center of the frame-work an engine housing or casing 6 isprovided covering substantially the entire driving mechanism. In thiscasing an internal combustion engine 7 is shown representing the powersource of my machine and having a driving shaft 8. Although the drawingsdisclose an internal combustion engine, be it understood that any otherkind of power source may be substituted depending upon the use to whichmy device is put. For open work this type of en ine is preferable whilefor work within a c osed mine a power source is employed which will notconsume oxygen or eject poisonous gases or smoke.

Upon shaft 8 is keyed a sprocket wheel 9 by means of which the actual.drilling mechanism. of my device driven. This mecha nism consists of adrill rod 10 made preferably of square shaped stock and having at one ofits ends a boring or business head 11 made either-separate andexchangeable or forming one piece with the bar, and at its other a tailor feeding end 12 preferably cut at right angles to its. central axis.

At the front plate 13 of the casing 6 a bearing 14 is attached whichextends invardly into the casing. liotatably mounted therein is a sleeveor bushing 15 provided at its end. protruding into the casing. with aflanged coupling member 16; the flange 17 of which dips into receiver 18containing oil or other lubricant indicated at 19. Adjacent to thesmooth face of flanged coupling member 16 and forming an extension ofsleeve 15, a cylindrical receiver 20 is provided having a cone-shapedseat within as seen at 21. The sleeve 15 is somewhat longer than bearing14 and provides at 22 a bearing for sprocket wheel 23 which may freelyrotate thereupon.

By means of sprocket chain 24 motion is transmitted from sprocket wheel9 to sprocket wheel 23.

Facing the claws 25 of coupling member 16 and forming an integral partof sprocket wheel23 is acounter coupling member 26 having coupling claws2'7 adapted to be engaged by claws 25. r

' Set in receive" 20 is the reduced portion 28 of sleeve 29 which latterprotrudes through the rear of engine housing 6 and is rotatably lodgedinbearing 30. The protruding end is threaded at 31 for receivingauxiliary tools, for instance an emery wheel 32 '(Fig; 2), by means ofwhich the drill head 11 of the drill rod may he sharpened.

Guided in and. engaged by the squareshaped hollow of the sleeve lfi isthe drill rod 10, which, due to its being lodged in said sleeve; may notonly rotate' therewith but may also slide forth'andback. The drill rodfreely rotates in the longerrear sleeve 29" and protrudes with its tailend 12 through this sleeve and is engaged by a pusher d6? scribed hereinbelow. v V V The claws 25 and 27 of couplmgmembers 16 and 26respectively may be engaged or disengaged-by the operation ofatransversely disposed "lever 33 having its fulcrum within and at oneside-plate of the engine housing as seen 34, and provided atsubstantially its centerwith a generallyrectangular slot or aperture 35.Protruding into the slot and CllSPOSGCl'OPPOSltG each other are set 7screws 36 adapted to engage flange 17 of coupling member 16. The helicaltension spring 37 secured at one end to front plate 13 of engine casing6 and at lts other end to lever 33 keeps coupling members 16 and 26normally engaged. When it is desired to disengage said coupling memberslever 38 is pulled back, simultaneously shifting bushing or sleeve 15 ofwhich coupling member 16 forms a part. In order to hold lever 83 indisengaged position a hook arrangement 2-38 is provided which engages anaperture 39 in said lever. V

The drill rod holder or pusher 40 attached to the tail end 12 of drillrod 10 comprises a hollow generally cylindrical casing 41 hava pair ofsidewisely disposed adjusting holders 42 and central handles 43projecting downward, a square shape hollowed cylindrical thimble 44 forreceiving and set screws 45 provided at its open end for securing thetail end 12 of drill rod 10, said thimble 44 being adapted to revolvewith said drill rod. An anti-friction thrust bearing 45 is provided atthe bottom of and between thimble 44 and the bottom of hollow casing 41.A thimble guard 46 held by Wing screw 47 from swinging open preventsthimble 44' from leaving casing 41. V

Above and perpendicular to drill rod 10 a shaft 48 is rotatably mountedin bearings 49- secured within to the'sidesof engine casing 6 and may beoperated by hand crank 50.

Keyed to the shaft at both sides of long The arrangement of sheaves andcord is specially designed to provide self adjusting balancing feedingmeans whereby the drill rod is pushed forward in as nearly a per fectlystraight direction, as the vibrations caused by the drills operationpermit. The pusher 40 serves as auxiliary bearings when the drill rod isprotruding far out to the rear of the driving mechanism. The provision*made attherearof sleeve 29 for attaching auxiliary tools as forinstance, the emery wheel. 32 permits the drill being kept always in fitcondition for use without resorting to outside means. I V

Having thus described my lnventlon and reserving for myself the right tomake necessary alterations and amendments within the broad scope of myinvention, I claim Tn a power driven drilling machine having a frame, acasing attached to said frame, and a stationary motor in said casing,the combination of a longitudinally disposed square drill rod passingthrough said casing having a business head and a tail end, a flanged.bearing having its flanged end secured inwardly at the vertical centerline of the front portion of said casing, a sleeve rotatably mounted insaid bearing and terminating at its inner end in a coupling memberhavingian annular flange of larger diameter than the coupling member, asquare shaped aperture in said sleeve to receive said drill rod, acounter coupling member provided at the inner face 01": said firstcoupling member, means for rotating said counter coupling member, atransversely disposed lever secured to, and having its fulcrum at, oneside of said casing, a generally rectangular aperture provided atsubstantially the center of said lever and having set screws provided atits sides engaging the flange of said first coupling member, a helicaltension spring secured at one end to the front of said casing and nearthe free end to said lever facilitating the said coupling members beingnormally engaged, a hook adapted to engage the free end of said lever ina position when said coupling members are disengaged, a bearing providedat the rear of said casing, a long sleeve rotatably mounted in saidbearing having its open end protruding outwardly from the rear of saidcasing and its other end secured to said first coupling member, means atthe free end of said sleeve adapted to receive auxiliary tools, whendesired, a pusher provided at the feeding end of said drill rod, meansfor rotatably securing said drill rod in said pusher, and means forfeeding said pusher.

Signed at New York city, in the county of New York, and State of NewYork, this 23rd day of April A. I). 1920.

LOUIS FRANCOIS VERDY.

